Below are 2 similar code blocks. They take a string, encrypt in SHA512, then convert to Base64, I had trouble getting the second code block to produce the same results as my manual test using online calculators and encoders. So I broke the process down step by step and discovered that it was capable of producing the same results as my manual test but only if it behaved like the first code block. Why do these two code blocks produce different results? Thanks!
private void EditText_AfterTextChanged(object sender, AfterTextChangedEventArgs e)
{
//This builds a string to encrypt.
string domain = txtDomain.Text;
string username = txtUsername.Text;
string pin = txtPin.Text;
txtPreview.Text = string.Format("{0}+{1}+{2}", domain, username, pin);
//This takes the above string, encrypts it.
StringBuilder Sb = new StringBuilder();
SHA512Managed HashTool = new SHA512Managed();
Byte[] PhraseAsByte = System.Text.Encoding.UTF8.GetBytes(string.Concat(txtPreview.Text));
Byte[] EncryptedBytes = HashTool.ComputeHash(PhraseAsByte);
HashTool.Clear();
//This rebuilds the calculated hash for manual comparison.
foreach (Byte b in EncryptedBytes)
Sb.Append(b.ToString("x2"));
txtHash.Text = Sb.ToString();
//This takes the rebuilt hash and re-converts it to bytes before encoding it in Base64
EncryptedBytes = System.Text.Encoding.UTF8.GetBytes(string.Concat(txtHash.Text));
txtResult.Text = Convert.ToBase64String(EncryptedBytes);
}
and
private void EditText_AfterTextChanged(object sender, AfterTextChangedEventArgs e)
{
//This builds a string to encrypt.
string domain = txtDomain.Text;
string username = txtUsername.Text;
string pin = txtPin.Text;
txtPreview.Text = string.Format("{0}+{1}+{2}", domain, username, pin);
//This takes the above string, encrypts it.
StringBuilder Sb = new StringBuilder();
SHA512Managed HashTool = new SHA512Managed();
Byte[] PhraseAsByte = System.Text.Encoding.UTF8.GetBytes(string.Concat(txtPreview.Text));
Byte[] EncryptedBytes = HashTool.ComputeHash(PhraseAsByte);
HashTool.Clear();
//This takes the EncryptedBytes and converts them to base64.
txtResult.Text = Convert.ToBase64String(EncryptedBytes);
//This reverses the EncryptedBytes into readable hash for manual comparison
foreach (Byte b in EncryptedBytes)
Sb.Append(b.ToString("x2"));
txtHash.Text = Sb.ToString();
}
